D90 Video Flicker

[Clart]

Got my D90 today, and I've noticed some nasty wavy lines on the video mode when shooting indoor.

like this

http://vimeo.com/1870933?pg=embed&sec=1870933

Looks like its a problem with neon lights (50hz) and 24fps.

 

[Lagerlout]

Ummm.... All lights in this country will cycle 50 times a second if supplied by mains electricity. Not just neon.

I'm sure there will be a way round, but shooting moving images is a different ball game lol. Can you adjust the frame rate? I'm pretty sure the PAL standard is 25fps... but college was oh so long ago lol

 

[dk]

take photos with it, you won't notice them then!

 

[ukaskew]

Be interested if you find out anything more about this. 24fps is the 'standard' for motion pictures, so they might have the same problem!

 

[Bash]

I told you all you need a shutter! but no, a huge argument followed and everyone thought they knew best!
You replyed to this thread.
http://www.cliosport.net/forum/showthread.php?t=361455&highlight=video

ffs!

of course but do remeber it leaves the shutter open so for filming motor racing you may not be able to get the definition you require.

The 5D records at 30fps, surely that's more than enough for motor racing and the like? There is also hope that 24p will be available, which puts it ona par with film cameras.

Oh no, broadcast camera shoot at 25fps but the shutter exposes the same frame several times to eliminate blur. Don't get me wrong if given the option of buying a broadcast camera or a still's I will pick the stills because you cannot take still images (properly) with a broadcast camera. I just thought the initinal claim of their the same quality as a pro HD camera wasn't exactly correct. This is the difference.

If it can't even take pictures of a lamp what chance does anything else have? Please listen to me.

 

[Clart]

Daylight its fine, superb quality. Under artificial lights, it flickers noticably. I found that this can be eliminated by pointing the camera at some midtones/shadows, where the wavy lines disappears, then holding exposure lock and recomposing on the subject. Hey presto the lines are completely gone. Seems like a bit of an exposure problem rather than hardware. Its also something that Nikon are aware of, and apparently only occurs in PAL countries. Bizarre!

 

[Brasseye]

maybe this could be addresed by a firmware update ?

 

[Bash]

Daylight its fine, superb quality. Under artificial lights, it flickers noticably. I found that this can be eliminated by pointing the camera at some midtones/shadows, where the wavy lines disappears, then holding exposure lock and recomposing on the subject. Hey presto the lines are completely gone. Seems like a bit of an exposure problem rather than hardware. Its also something that Nikon are aware of, and apparently only occurs in PAL countries. Bizarre!

Video was formed to be half the frequency of the countrys electricty supply. All of this are simple video basics.

The frame rate is below the flicker fusion threshold! THIS IS WHY BROADCASTING CAMERAS USE SHUTTERS!

 

[Clart]

erm ok. I'm just telling you i've found a way around it.

 

[Bash]

Errm no, it will still be there just not so noticeable. try shooting in NTSC.

 

[Lagerlout]

I said as much further up!!

 

[Clart]

look, no wavey lines!!

http://www.flickr.com/photos/rrfierce/3022604557/

 

[ukaskew]

look, no wavey lines!!

http://www.flickr.com/photos/rrfierce/3022604557/

Sweeeeeeet!

 

[Reyes]

look, no wavey lines!!

http://www.flickr.com/photos/rrfierce/3022604557/

Thats made my morning, bloody cute!

 

[Rasclart]

LOL cool video mate! She is a right little cutey

 

[ukaskew]

Having great fun with this, unfortunately I can't run Premiere Elements as my 'puter is a bit retro, so I'm using Windows Movie Maker which is a bit crap, and halves the resolution.

[youtube]lC0djqViWP4[/youtube]

http://uk.youtube.com/watch?v=lC0djqViWP4

 

[Bash]

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